Observation of Multimode Solitons in Few-Mode Fiber

TL;DR

This paper reports the experimental observation of multimode solitons in few-mode fibers, revealing their unique properties and energy-volume relations, advancing understanding of complex soliton dynamics in multimode optical systems.

Contribution

It provides the first direct experimental observation of multimode solitons in few-mode fibers and characterizes their unique spatiotemporal properties and energy relations.

Findings

Multimode solitons exhibit a continuous variation with input energy and modal composition.

They have a distinct energy-volume relation from single-mode and fully spatiotemporal solitons.

Experimental isolation and direct observation of multimode solitons in fiber.

Abstract

We experimentally isolate and directly observe multimode solitons in few-mode graded-index fiber. By varying the input energy and modal composition of the launched pulse, we observe a continuous variation of multimode solitons with different spatiotemporal properties. They exhibit an energy-volume relation that is distinct from those of single-mode and fully spatiotemporal solitons.